<template>
	<view>
		<view class="goods-list">
			<view v-for="(goods, i) in goodsList" :key="i" @click="gotoDetail(goods)">
				<my-goods :goods="goods"></my-goods>
			</view>
		</view>
	</view>
</template>

<script>
	import {$http} from '@escook/request-miniprogram'
	
	uni.$http = $http
	
	//请求的根路径
	$http.baseUrl = 'https://api-hmugo-web.itheima.net'
	
	uni.$showMsg = function(title = "数据请求失败！", duration = 1500) {
		uni.showToast({
			title,
			duration,
			icon: 'none'
		})
	}
	
	
	export default {
		data() {
			return {
				// 请求参数对象
				queryObj: {
					query: '',
					cid: '',
					pagenum: 1,
					pagesize: 10
				},
				
				// 商品列表数据
				goodsList: [],
				// 总数量，用于实现分页
				total: 0,
				
				// 节流防止发起额外的请求
				isLoading: false
				
			};
		},
		
		onLoad(options) {
			this.queryObj.query = options.query || ''
			this.queryObj.cid = options.cid || ''
			
			// 调用获取商品列表数据的方法
			this.getGoodsList()
		},
		
		methods: {
			// 获取商品列表数据的方法
			async getGoodsList(cb) {
				this.isLoading = true
				
				const {data: res} = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
				
				this.isLoading = false
				
				cb && cb()
				
				
				// 请求失败
				if (res.meta.status !== 200) return uni.$showMsg()
				// 请求成功
				this.goodsList = [...this.goodsList, ...res.message.goods]
				this.total = res.message.total
			},
			
			gotoDetail(goods) {
				uni.navigateTo({
					url: '/subpkg/goods_detail/goods_detail?godds_id=' + goods.goods_id
				})
			}
		},
		
		onReachBottom() {
			if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
			
			if (this.isLoading) return
			
			// 触底后页码自增加 1
			this.queryObj.pagenum += 1
			this.getGoodsList()
		},
		
		onPullDownRefresh() {
			// 重置关键数据
			this.queryObj.pagenum = 1
			this.total = 0
			this.isLoading = false
			this.goodsList = []
			
			// 重新发起数据请求
			this.getGoodsList(() => uni.stopPullDownRefresh())
		}
	}
</script>

<style lang="scss">
	
</style>
